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Technical content

40 x 28.5mm Speaker Product Overview

  • 40 x 28.5mm oval speaker with Neodymium magnet for 82 dB sensiƟvity
  • 3W conƟnuous, 4W maximum power handling and 4Ω impedance
  • Paper cone with cloth surround for durability and natural sound Frequency Response (1W @ 0.5 meters)

3541 Stop Eight Road • Dayton, Ohio 45414

40 x 28.5mm Speaker Mechanical and Environment Testing Test Description Test Condition High Temperature 60°C ±2°C with random humidity for 96 hours Low Temperature -25°C ±2°C wi th random humidity for 96 hours Humidity 40°C with 90% to 95% relative humidity for 96 hours Vibration 1.5 mm movement modulated at 10 to 55 Hz for 2 hours Drop Test 75 cm free fall onto concrete floor, 10 cycles Temperature Cycle Test -25°C to 60°C, 4 cycles (refer to Temperature Cycle Test Graph) After tests, speaker shall rest for 1 hours. SPL shall not deviate ±4 dB from pre-test measurement. Temperature Cycle Test Graph Thiele-Small Parameters Specification AS04004PO-2-R Fo (Hz) 466 Qes 4.509 Qms 4.414 Qts 2.231 Vas (mm^3) 19.2k Sd (mm2) 599 Mms (g) 0.309 Xmax (mm) 0.6 Re (ohm) 4.26 SPL (dB) @ 1W/1m 78.09 BL (T) 0.925 Frequency Response and SPL Measurement Setup

Designed by Checked by Approved by Drawn Date Edition Sheet Date 12/6/2005 Date 12/7/2005 Date 12/7/2005 UNLESS OTHERWISE SPECIFIED: DIMENSIONS ARE IN MILLIMETERS, TOLERANCES ARE ±0.5 AND ANGLES ARE ±3°. AS04004PO-2-R.idw SIZE

REVISION HISTORY

LTR DESCRIPTION DATE APPROVED - RELEASED FROM ENGINEERING 12/7/2005 A REVISED TO INVENTOR 3-D DRAWING TEMPLATE 4/9/2008 B.R. B REVISED PART HEIGHT 3/25/2011 M.L. SPECIFICATIONS PARAMETERS VALUES UNITS RATED INPUT POWER 3 W MAX INPUT POWER 4 W IMPEDANCE 4 ± 15% OHM OUTPUT SPL @ 1W/0.5M DISTORTION (MAX.) 5% - RESONANT FREQUENCY 420 ± 20% Hz FREQUENCY RANGE 200 ~ 20,000 Hz HOUSING MATERIAL ABS - CONE MATERIAL PAPER - MAGNET MATERIAL RARE EARTH - OPERATING TEMPERATURE -10 ~ +55 °C WEIGHT 11.9 grams NOTES: 1. ALL DIMENSIONS ARE IN MILLIMETERS. 2. SPECIFICATIONS SUBJECT TO CHANGE OR WITHDRAWL WITHOUT NOTICE. 3. THIS PART IS RoHS 2002/95/EC COMPLIANT. 9.5 28.5 \0.2 11.7 \0.3 33.5 \0.2 40 \0.3 22 \0.2 28.5 \0.2 3n\` 0.2 (4) THIS DOCUMENT CONTAINS DATA PROPRIETARY TO PROJECTS UNLIMITED, INC. ANY USE OR REPRODUCTION, IN ANY FORM, WITHOUT PRIOR WRITTEN PERMISSION OF PROJECTS UNLIMITED, INC. IS PROHIBITED. ©2003, Projects Unlimited Inc.